Added

• Wildcard array-of-objects validation: rule keys can now contain a single * path segment, e.g. 'items.*.price' => 'required|numeric', to validate a field across every element of a nested array of objects.
  • Each element is validated independently through the library's existing pipe-delimited rule parsing (required, numeric, min, etc.) — unchanged.
  • Failures and passing values are reported under their concrete, expanded key (items.0.price, items.1.price, ...) in the same flat errors() / validated() structures used for ordinary fields, so no special-casing is needed on the caller's side.
  • An entirely absent parent array is treated as nothing-to-validate and passes, matching the library's existing optional-field-absent convention.
  • A parent path that is present but not an array fails with a single error keyed on the base path, reusing the existing array rule's type-mismatch message ("The items field must be an array.").
  • An empty parent array has no elements to iterate and passes.
  • See the new "Validating Arrays of Objects" section in README.md for a full runnable example.
• New tests in tests/run.php covering: a mixed valid/invalid items array (asserting the exact failing index is reported and valid indices are absent from errors), a missing sub-field per element, an all-valid array, an absent parent, a non-array parent, and an empty parent array.

Adds edge-case regression tests: in rule against array values/empty parameters, bare regex with no parameter, non-numeric min/max parameters, unrecognized rule names, colon-containing regex parameters, and whitespace tolerance in rule parsing. No behavioral changes; all tests pass.

Initial stable release.